Universal polished-rod rotor



May 14, 1929. A. BOYNTON UNTVERSAL POLISHED ROD ROTOR 2 Sheets-SheetQriginal Filed Oct. 8, 1926 attonwq I May 14, 1929. A. BOYNTON 1,712,868

UNIVERSAL POLISHED ROD ROTOR Original Filed Oct. 8, 1926 2 Sheets-Shee 2l mented May I l, 1929 Ul'lED STATES unset ALEXANDER BUYNTON, OF SANANTONIO, TEXAS.

UNIVEBJSALi'POLISIjIED ROD ROTOR.

Application filed October 8, 1926, Serial No. 140,263.

This invention relates to polished rod rotors especially adapted for usein connection with pumping wells.

Briefly stated, an important object of this invention is to provide apolished rod rotor which is entirely independent of a pumping jack orother peratiug means for the reciprocating; mechanism of the well. andwhich is attached to those parts common to all pumpin wells of which Iknow whereby a single rotor constructed in accordance with this in.vention is capable of universal application and use without anymodification whatever.

A further and equally im 'iortant object of the invention is to providea rotor by means of which a polished rod, the sucker rods, and the fluidlifting unit connected thereto may be turned in a clockwise direction todistribute wear, to avoid the formation of squirt grooves or jets in theworking barrel and the fluid lifting unit and at the sametime to exertan intermittent tightening effect on the rods at all the joints thereof,the accomplishment of these aims being intended to avoid frequentinterruption of the pumping operation.

Other objects and advantages will be apparent during the course of thefollowing de scription.

In the accompanying drawings forming a part of this application and inwhich like nunuirals are employed to designate like parts throughout thesame: t

Figure l is a front view of the improved rotor in use;

Figure 2 is a side elevation of the same;

Figure 3 is a perspective of an actuating shell embodied in theinvention;

Figure 4: is a side elevation of a rotor unit embodied in the invention,parts being shown in section in the drawings, wherein for the purpose ofillustration is shown a preferred. embodiment of the invention, thenumeral 5 designates a tubing having a coupling 6 which normally restson the casing head of a well. A stuffing lJOX '7 of conventional orother design is attached to the upper portion out the tubing andprovides a substantially liquid tight seal between the tubing and thepolished rod 8, it being; well known that the fluid is elevated by afluid lifting unit such as a series or: cups or a plunger at the lowerportion of the sucker rods connected to the polished rod and that thefluid thus elevated is carried off from the well through a pipe 9.

Renewed April 8, 1929.

At this point it is noted there are many different types of actuatingmeans by which the polished rod 8 is reciprocated but, as sue;- gcsted1n the opening); paragraphs of this specification, the rotor hasconnection with only those parts common to all puu'ipiue' wells of whichi: know and in carryinif exit the invention, I mount a clutch unit iiran actuating unit clearly illi'lstrated in Fix ure l. on the polishedrod at a point above the stufiing box. By reference to Figure elit willbe seen that the rotor or clutch unit consists of a body 10 of more orless tubular formation and having set screws ll by means of which thebody may be locked to the polished rod for movement there'u ith. heouter portions of the s t screws 11 are preferably flush with theperiphery of the body 10 so thev will not interfere with the operationof the rotor and the set screws may be provided with hexagonal socketsfor the reception of an Allen wrench whereby the sets crews may be e:sily tightened or loosened.

The body 10 constitutes one member of a clutch, while the other majormember of the clutch is in the nature of a sleeve or band mounted on thereduced. lower portion of the body 10 for clockwise and anticlockwisemovement thereon. Figure l clearly illust ates that the clutch sections10 and l2 have co-acting ratchet teeth by means of which the section 10is turned in a clockwise direction when a similar movement is im partedto the section 152 and by iricuns of which the section 12 may he movesin a counterrlocle wise direction without ini 'iartine a similarmovement to the section 10! in other words, the dri iug connectionbetween the sections 10 and 152 is strictly one way.

'lhe lower portion of l section 10 is extended beyond the section 12 andencircled by a coil s 'irinp; it, the upper portion of which bearsagainst the adjacent end ot the section 1' while the lower portion ofthe s ring starts the internal shoulder of hood 15. It will, theretare,be seen that the spring 14L urges the section 12 upwardly so that theteeth oi the same are norn'ially in engagement with the teeth of thesection 10. However. COlllltQlClOClWi556 movement ot the section 12 isprovided for by the compros on of the spring is. Ullhe upper terminaloil the hood l5 he eled to shed rain, snow and the like and freelyreceives the reduced portion of the section 12. A look nut 16 holds tnehood in place. i

The section 12 is provided with a radial arm 17 upon which a roller 18preferably of case hardened metal is mounted. The inner portion of thearm may be annularly enlarged to define a shoulder which cooperates witha collar 20 in limiting endwise movement of the roller. However, thereis sufficient play between the roller 18 and the enlarged inner portionof the arm and the collar 20 to permit the roller to be freely turnedunder the influence of an actuating mechanism to be described. Suitablefastening means such as a screw bolt 22 may be employed to hold thecollar 20 in place. A grease cup or other lubricating means 2st isthreaded into the outer terminal of the arm and supplies a lubricant tothe roller 18 by way of an L-shaped pas-- sage in the arm.

In explaining the operation of the invention as thus far described itmight be said that the clutch section 10 is rigidly connected to thepolished rod approximately at the I point indicated in Figures 1 and 2and when the arm 17 is turned in a clockwise direction by a means to bedescribed similar movement ished rod will again be turned in a clockwisedirection.

Coming now to the actuating means for the rotor unit illustrated inFigure 4 and just described, attention is directed to Figures 1 and 2which show that an actuating shell surrounds the polished rod and isprovided with a base 32 which rests upon the stuffing l)0X 7 and is heldthereon by n'ieans of anchoring bolts 34.

The corners of the base 32 are more or less triangularly shaped and areprovided with bearing portions or saddles 36 upon which the nuts 38 ofthe anchoring bolts 34 seat. Slots 40in the base 32 allow of theexpeditious application or removal of the bolts 3 1.

The squared heads at the lower portions of the bolts 34 are detachablysecured within the laterally slotted cars 44: of a two part clamp 46secured to the coupling 6, as clearly illustrated in Figures 1 and 2.Thus when the nuts 38 are tightened the same draw the base 32 firmlydown on the stufling box whereby the shell is held rigidly in place.

If for any reason it is desired to temporarily disconnect the bolts 34it is merely necessary toloosen'the nuts 38 and then by a lateralmovement of the bolts the same may be withdrawn from the slots in thebase 32. Attention is especially directed to the fact that the bolts 34are tilted in the direction in. which the actuating shell 30 may beprone to turn during the operation of the rotor.

Figures 1, 2 and 3 admirably illustrate that the shell or actuatingmember 30 is provided with a somewhat spiral, cam slot 50 to receive theradial arm 17 and the roller '18 mounted thereon. It is clearly shown inFigure 3 that the upper portions of the walls of the cam slot 50 divergeto provide a gradually restricted entrance opening to the slot. Thus itis that as the radial arm 17 and the collar [8 approach the slot 50 onthe down stroke of the pump the same are guided into the slot by thediverging walls of the slot.

The spiral formation of the walls of the slot is continued to the upperterminal shell 230 where the walls meet to delinc a rather sharp pointagainst which the collar 18 may at times strike. Should the collar 18strike the tip 52 it will ride on either side of the same down. into themore restricted portion of the cam slot. The curvature of the collar 18and the formation of the tip avoids hanging of the collar on the tip onthe down stroke of the well.

The engagement of the collar 18 with the wall 52 as the collarapproaches the slot 50 will merely have the eilrct of turning the clutchsection 12 in a counterclockwise position. No similar movement will beimparted to the section 10 or the polished. rod. However when the collar18 eniers the slot 50 the rotor section 12 is positively turned in aclockwise position and a similar movement is imparted to the polishedrod.

On the other hand if the collar 18 during the descent of the polishedrod is engaged with the wall 5% at the upper portion of the slot 50 theclockwise turniiur of the rotor section and the polished rod will beimmediately started and will continue during the descent of the collarthrough the slot 50.

Figure 3 clearly illustrates that the lower portion of the cam slot isprovided with a vertical branch (30 constituting a sa fetv zone by whichbumping o f the collar against the bottom of the slot is avoided. Alsosuilicient space is provided between the bottom of the section 10 andthe base of the shell and the adjacent portion of the stufling hon toprevent the possibility of the clutch bumping.

The branch at the lower end of the cam slot and the complete opening ofthe slot at the upper end thereof provides a means whereby the actuationof the rotor is positively assured at all times, including those periodswhen the shackle lines stretch as a result of heat and contract due tocold weather. Should the shackle lines stretch as a result of heat, thearm 17 and the roller 18 may move down a considerable distance into theslot 60 and if the shackle lines contract as a result of cold weatherthe polished rod will operate within higher limits and the actuating arm17 and the roller 18 will, therefore, extend only into the upper portionof the vertical branch it indeed it moves into the same at all.

Having thus described the invention, what is claimed is:

1. In a rotor for the pun'iping rod oi a well pump, a rotor unit having;means whereby the same may be rigidly connected to a pumpii'ig rod toreciprocate therewith and being provided with an actuated element, andan actuating member having means whereby the same may be rigidlyconnected to a fixed portion of? the equipment of a pumping well andhaving a cam disposed in the path of descent of and adapted to engagesaid actuated member to turn the pumping rod on each down strokethereof.

2. In a rotor iior the pumping rod of a we ll pump, a member having acam edge and being provided with means whereby the same may be held in arelatively fixed position, and a rotor unit for rigid connection to thepiiunping rod and having! means cooperatinp; with said cam edge to turnthe pumping; rod when the same approaches the limit of descent.

3. In a rotor for well pum s, a shell haviup; a cam slotopen and widenedat one end thereof to define an enlarged entrance, and a rotor unithaving means whereby the same may be secured to the pumping rod of awell pump and having an arm adapted to be received in said slot by wayof the enlarged entrance thereof.

i. In a rotor for a well pump, a shell having a cam slot open at one endthereof, and a rotor unit for connection with the pump ing; rod o'l. awell pump and having" an arm aqapted to be detachably received in saidcam slot, said. slot bein provided with a sub stantially verticalbranch. defining a safety cone.

5. In a rotor for a well pump, a shell having}; a cam slot, one wall ofwhich is tilted continued to one terminal of the shell o term a ,guide,and a rotor unit having an arm adapted to be engaged, by said guii'leand directed thereby into said cam slot.

in a rotor for a well pump, an actuatlllQ member having a cam slot, thewalls oi whiz-h meet at one terminal of the actuating member to term apoint, and a rotor unit having means detachably received in said camslot and engaging; a wall thereof.

7. In a rotor for a well pump, an actuating; shell having; a baseprovided with slots, anchoring bolts extended through said slots andbeing removable laterally from the same, ano an anchoring clamp forsaid. anchoring bolts and ha *inp; means whereby the same may beconnected to a relatively fixed part oi? a pumping well to hold theshell against movement.

8. In a rotor, an actuating shell having a base adapted to be mounted onthe stalling .boX of a well pump, bolts detachably connected to saidbase, and an anchoring clamp having ears engaged by said bolts, saidbolts being tilted in the direction in which the actuating shell proneto turn.

9. In a rotor for a pumping well, a me1nher having a cam slot open atthe upper portion thereof and provided with diverging walls defining agradually restricted entrance and cam edges, and a second member adaptedto be received in said slot.

10. In a rotor r a pumping well, a member havinga cam provided with acontinuation extended to one end portion of the member to form a guide,and a rotor unit adapted for intern'littent engagement by said cam and.the guide thereof, there being means whereby said member is held againstmovement.

1.1.. In a rotor for a pumping well, a pair oi cooperating members, oneof which is adapted for rigid attachment to a pumping rod to movetherewith and the other member being provided with means whereby thesame may be secured in a relatively lined position in the path ofdescent of the movable member and being provided with means to turn thesame when approaching the limit of descent.

l2. In a rotor for a well pump, an actuated member adapted. for rigidattachment to a pumping rod to move therewith, and an actuating memberhaving a cam for engagement with the actuated member to turn the same,and being provided at one end of the cam with a safety zone for the freereception of the actuated member.

13. In rotor for a well pump, a shell having a spiral cam slot open atone end thereof and provided with walls diverging toward one end of theshell to define a gradually restricted entrance opening, the other endof the slot being provided with a safety branch, and a member adapted tobe recei\ ed in said slot and the sait'ity branch. thereof.

14:. In a rod. rotor :tor a well P111131), a pair oil cooperatingmembers, one of which is adapted for attachment to the pumping rod of awell. pump and the other being adapted for relatively fixed mounting,one of the cooperating members being novided. with an arm and the othermember being provided with a cam slot to detachably receive the arm andturn one of the members when the pumping rod approaches the limit ofmovement in one direction.

15. In a rotor for use on well pumps, a shell having a cam slot open atone end thereof, and a member having an arm adapted to be detaohablyreceived in said cam slot by way of the open end thereof.

In testimony whereof I aliizr my sign ature.

ALEXANDER novurou;

